There were no big changes. Some bad actors (identifying as bots) have been blocked by their IP address, and I've marked some more links as "rel"="nofollow" in the hope that good actors won't hammer the site for little to no information gain. This is mostly for the print view and showing spoilers.

I'm thinking of changing the spoilers to be entirely client side by using the <details><summary>Reveal Spoiler</summary> Here is the hidden content</details> tag - it seems to be fairly well supported.

Testing this:

The changes for this would be mostly made in ParseLinksInContent, replacing the link spoiler style with something that renders <details><summary>Reveal</summary>...</details>, and in Display Settings, changing the link spoiler style to details.

I'm for removing the link spoiler style alltogether, as modern (enough) user agents render it well enough. Revealing all spoilers can also be implemented in Javascript easily if needed.